Mitsubishi WS0-4RO4002 Description Description Mitsubishi PLC Safety Controller Output module; 4 safety relay outputs Related products MITSUBISHI FR-A540-0.75K-EC MITSUBISHI A1SX81 Mitsubishi FX2N-48ER-ES/UL MITSUBISHI A1ADP-SP MITSUBISHI A2NCPU Mitsubishi FX2N-32ET-ESS/UL